Beat all ingredients (A) on medium speed for 10mins.
Add in ingredient (B) and continue to beat on low speed until evenly mix then let it rest for 30mins.
Wrap ingredient (B) to the center and give 3 half-turns and let it rest.
After give another 2 half-turns then let it rest for 15mins before rolling and cut to your preferred size.
Bake at 230°C for 25mins then let is cool completely.
Whisk all ingredients (C) on medium speed or until it is evenly mix.
Using a piping bag to squeeze the ingredients (C) and (D) between the two slices and decorate to your preference and it is ready to be served.